Coincidence, collective paranoia, or a Blizzard webmaster enjoys making people go crazy before a Blizzard presentation at a gaming event.  The diablo3.eu website, who was reported linking to the Blizzcon site early on August, then to a forbidden 403 page, is now redirecting to the UK version of Diablo II: Lord of Destruction. Click here:
www.diablo3.eu

The Spain version of the domain name, is no longer a Forbidden page.  It now points to the Diablo II: Lord of Destruction website for Spain. Click here:
www.diablo3.es

Back on 2003, Blizzard North was developing two unannounced games.  One was cancelled. None of them were publically titled. The US Patent website listed back then a Diablo II: Salvation expansion pack, which is dead/abandoned at present time.  Right now, whether there is or not an announcement, all we can do is wait.  I have seen a lot of fan activity in various forum communities looking around for any evidence.  I don’t blame them.  As a fan myself I really wish the third game gets announced.  No problems on my end.  I will purchase and play Starcraft II, World of Warcraft: Wrath of the Lich King and a Diablo game either way.